Inertial fusion chamber is conducted in a metal chamber with polymer capsules. And the capsules are usually made of carbon

hydrogen and other low Z materials. It is difficult for traditional X-ray imaging technique to detect the inertial fusion capsules. X-ray phase contrast imaging has been used in low Z material imaging. However it has not been applied to low Z materials wrapped by strong absorption materials. In this paper

we construct a model and discuss the effect of parameters such as X-ray energy

distance of object to detector

and thickness of strong absorbing materials

on phase contrast imaging quality by simulation and experiment. We found it feasible to perform high resolution and nondestructive detection of inertial fusion capsules in a chamber by X-ray phase contrast imaging. And this technique may have other applications

such as inclusion detection in petroleum exploration.